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Velocity, acceleration and rotation measurement

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  • Physics [2]
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  • Measurement of basic variables [2]
  • Velocity, acceleration and rotation measurement [2]
  • Fundamental areas of phenomenology [2]
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High performance fibre optic accelerometers
Author(s): S.T. Vohra, B. Danver, A. Tveten, A. Dandridge
Source: Electronics Letters, Volume 33, Issue 2, January 1997, p. 155 - 157
Type: Article
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The authors report the design and performance of fully packaged, field ruggedised, high performance fibre optic (FO) accelerometers. Appropriate design considerations have resulted in FO accelerometers with many desirable engineering features which include: (i) high sensitivity (>20 dB re rad/g), (ii) low noise (<1 micro-g√Hz at 1 kHz) (iii) broad frequency response (100 Hz to 14 kHz), (iv) low sensitivity to extraneous measurands (e.g. static pressure sensitivity < –200 dB re rad/µPa), (v) small size (<35 gms total), and (vi) low cross-axis sensitivity (<–35 dB). Single device or arrays of such devices can be incorporated in many structural and vibration sensing applications at low cost.

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DC fibre-optic accelerometer with sub-μg sensitivity
Author(s): F. Bucholtz, A.D. Kersey, A. Dandridge
Source: Electronics Letters, Volume 22, Issue 9, April 1986, p. 451 - 452
Type: Article
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We describe a fibre-optic accelerometer, based on the technique of nonlinear displacement-to-strain conversion (NDSC), suitable for use at DC and low frequencies. The sensor exhibits a minimum detectable acceleration of less than 1 μg RMS (g = 9.8 m/s2) at 0.5 Hz and a linear dynamic range greater than 106.

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